AC180 BMS error EO74

Product Discussion BLUETTI AC Series
1

I have had the AC180 for a few weeks and it was working fine until the temp light came on with AC outlet about 1500 watts and it would not charge, The BMS fault code came up as EO74 BMS error. I have since got charge and updated BMS, my concern is that the fan was not running when using ac before the update and now it is,

Does anyone know if I had an original fault of no fan which caused the temp error, and now it is updated it is normal for the fan to come on with AC. The unit is working ok but I am not sure if I can rely on it if it is not operating correctly. I am having trouble getting any answers from Bluetti.

2

@Tom1 Could you please check the exact error code about the battery pack below

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3

There’s no error code … the error code was EO74. BMS it is gone now

4

BMS version v1033.12

5

@Tom1 Normally, it may be caused by temperature issues. Once the temperature returns to normal, the error code will disappear.